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50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer
50kVA Oil Immersed Transformer

50kVA Oil Immersed Transformer

50kVA Oil Immersed Transformer is usually pole mounted or installed in a distribution station for daily lighting and factory power, whose an LV output up to 0.4kV. The corrugated tank has thermal expansion and contraction components that enable the transformer oil to be completely isolated from the atmosphere. A distribution transformer can be manufactured according to the requirements of the client. This transformer is optimally designed by patented technology and software.

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Project Partners

Phone/WhatsApp: 8619131285373

Email: info@zishengtransformer.com
Factory Headquarters: No. 118, Jingyi Street, Economic Development Zone.

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1. Product Overview

ZISHENG 50kVA Oil Immersed Transformer is a high-efficiency distribution transformer designed for reliable voltage conversion and power distribution in utility networks, industrial facilities, commercial buildings, renewable energy projects, and infrastructure applications.

The transformer adopts high-quality insulating oil as the cooling and insulation medium, providing excellent heat dissipation performance, strong overload capacity, and stable operation under continuous working conditions.

With advanced electromagnetic design, premium electrical materials, and strict manufacturing control, the 50kVA oil immersed transformer delivers low power loss, high energy efficiency, excellent short-circuit resistance, and long service life.

It is widely used in medium voltage distribution systems, especially for outdoor substations and projects requiring durable, economical, and reliable power supply solutions.


2. Product Specifications

Parameter Specification
Product Name 50kVA Oil Immersed Transformer
Rated Capacity 50kVA
Transformer Type Oil Immersed Distribution Transformer
Phase Single Phase / Three Phase
Frequency 50Hz / 60Hz
High Voltage Rating Customized
Low Voltage Rating Customized
Cooling Method ONAN (Oil Natural Air Natural)
Winding Material Copper / Aluminum
Insulation Medium Transformer Oil
Installation Type Outdoor / Indoor
Tap Adjustment Off-circuit Tap Changer
Core Material Grain-Oriented Silicon Steel
Tank Type Sealed / Conservator Type
Protection Class Customized
Standards IEC / ANSI / Customer Requirements

3. Main Structure Design

3.1 High-Efficiency Core

The 50kVA Oil Immersed Transformer uses high-quality grain-oriented silicon steel sheets with advanced core processing technology.

Features:

  • Low no-load loss
  • Reduced excitation current
  • Improved energy efficiency
  • Lower operating temperature
  • Reduced electromagnetic noise
  • Enhanced transformer reliability

The optimized core design reduces energy consumption during long-term operation and improves overall performance.


3.2 Reliable Winding System

The transformer winding is manufactured using high-quality copper or aluminum conductors according to customer requirements.

Advantages:

  • Excellent conductivity
  • High mechanical strength
  • Strong thermal stability
  • Good insulation performance
  • Superior short-circuit resistance

The optimized winding structure ensures stable operation under different load conditions and improves equipment durability.


3.3 Advanced Oil Cooling System

The transformer uses high-quality insulating oil for heat dissipation and electrical insulation.

Benefits:

  • Efficient heat transfer
  • Improved temperature control
  • Better overload capability
  • Enhanced insulation strength
  • Stable operation under continuous load

The oil circulation system effectively transfers heat generated by the core and windings, maintaining safe operating temperatures.


3.4 Durable Transformer Tank

The transformer tank is manufactured with high-strength steel materials and advanced sealing technology.

Features:

  • Strong mechanical structure
  • Excellent sealing performance
  • Moisture and dust resistance
  • Outdoor weather protection
  • Long-term service capability

The tank design allows stable operation in different environmental conditions, including high temperature and high humidity areas.


4. Product Advantages

High Reliability

The 50kVA Oil Immersed Transformer is designed for continuous operation in power distribution networks, providing stable voltage conversion and reliable electricity supply.


Excellent Heat Dissipation Performance

Compared with dry type transformers, oil immersed transformers have better cooling efficiency, making them suitable for outdoor applications and areas with variable load conditions.


Strong Overload Capability

The efficient oil cooling system allows the transformer to withstand temporary overload conditions while maintaining safe operation.


Superior Short-Circuit Resistance

The reinforced winding structure improves mechanical strength and resistance against short-circuit forces, enhancing operational safety.


Energy Saving and Low Loss

The transformer adopts low-loss materials and optimized design to reduce:

  • No-load losses
  • Load losses
  • Operating costs

This helps customers improve energy efficiency and reduce electricity expenses.


Long Service Life

High-quality materials, reliable insulation systems, and strict production processes ensure long-term stable operation.


5. Technical Features

Compact Design

The transformer has a compact structure, convenient transportation, and easy installation.

Outdoor Application Capability

The sealed oil tank structure protects internal components from:

  • Rain
  • Dust
  • Humidity
  • Temperature fluctuations

Easy Maintenance

Routine maintenance includes:

  • Checking oil level
  • Inspecting oil leakage
  • Checking electrical connections
  • Testing insulation performance
  • Inspecting protective accessories

Flexible Configuration

Optional accessories include:

  • Oil level indicator
  • Temperature indicator
  • Pressure relief device
  • Lightning arrester
  • Conservator tank
  • Buchholz relay (for applicable models)
  • Protective enclosure

6. Application Areas

Power Distribution Systems

  • Utility power networks
  • Distribution substations
  • Rural electrification projects
  • Urban power supply systems

Industrial Projects

  • Manufacturing plants
  • Mining facilities
  • Oil and gas projects
  • Industrial parks

Renewable Energy Projects

  • Solar PV plants
  • Wind power systems
  • Battery energy storage projects

Commercial Applications

  • Shopping malls
  • Office buildings
  • Residential communities
  • Infrastructure facilities

Special Environments

  • Remote areas
  • Tropical regions
  • High-temperature environments
  • Humid coastal areas

7. Customization Options

ZISHENG provides customized 50kVA Oil Immersed Transformer solutions according to different project requirements.

Available customization:

  • Rated voltage selection
  • Frequency selection (50Hz/60Hz)
  • Copper or aluminum winding
  • Vector group customization
  • Impedance adjustment
  • Tap changer configuration
  • Tank structure design
  • Outdoor protection requirements
  • Regional standard compliance

8. Manufacturing and Quality Control

ZISHENG follows strict quality management procedures throughout the entire manufacturing process.

Quality Control Process:

Raw Material Inspection

  • Silicon steel sheet inspection
  • Copper/aluminum conductor inspection
  • Insulation material inspection

Production Inspection

  • Core assembly inspection
  • Winding process inspection
  • Transformer assembly inspection
  • Oil filling inspection

Final Testing

  • Winding resistance test
  • Insulation resistance test
  • Voltage ratio test
  • No-load loss test
  • Load loss test
  • Dielectric strength test
  • Oil leakage test
  • Performance verification

Each 50kVA Oil Immersed Transformer is tested before shipment to ensure reliable operation after installation.


9. Why Choose ZISHENG 50kVA Oil Immersed Transformer

  • Professional transformer manufacturer with multiple production lines
  • High-quality raw materials and advanced manufacturing technology
  • Strict quality inspection system
  • Competitive factory-direct pricing
  • Customized engineering solutions
  • Stable production capacity
  • Reliable delivery capability
  • Export experience serving Africa, South America, Southeast Asia, Central Asia, and Middle East markets

ZISHENG 50kVA Oil Immersed Transformer provides a reliable, energy-efficient, and cost-effective solution for power distribution projects requiring stable performance, long service life, and dependable operation.

50kVA Oil Immersed Transformer Product Q&A

Q1: What is a 50kVA Oil Immersed Transformer?

A: A 50kVA Oil Immersed Transformer is a distribution transformer with a rated capacity of 50kVA that uses transformer oil as the insulation and cooling medium.

It is designed to step down medium voltage electricity to low voltage power for industrial, commercial, agricultural, and infrastructure applications. The oil cooling system provides efficient heat dissipation, strong overload capability, and reliable performance for continuous operation.


Q2: What are the main advantages of a 50kVA Oil Immersed Transformer?

A: The main advantages include:

  • High reliability for long-term operation
  • Excellent cooling performance
  • Strong overload capacity
  • Superior short-circuit resistance
  • Low energy loss
  • High operating efficiency
  • Long service life
  • Suitable for outdoor installation
  • Stable operation in harsh environments
  • Cost-effective power distribution solution

Q3: What is the difference between a 50kVA Oil Immersed Transformer and a Dry Type Transformer?

A: The main differences are:

Item 50kVA Oil Immersed Transformer 50kVA Dry Type Transformer
Cooling Method Transformer oil cooling Air cooling
Insulation Medium Insulating oil Solid insulation materials
Installation Mainly outdoor applications Mainly indoor applications
Heat Dissipation Excellent Good
Maintenance Requires oil inspection Lower maintenance
Fire Safety Requires oil protection measures Higher fire resistance
Application Utility networks, outdoor substations Buildings, data centers, indoor facilities

Oil immersed transformers are widely selected for outdoor power distribution systems requiring high reliability and strong cooling performance.


Q4: What voltage ratings are available for a 50kVA Oil Immersed Transformer?

A: ZISHENG can provide customized voltage configurations according to different countries and project requirements.

Common voltage options include:

  • High voltage side: 6kV, 10kV, 11kV, 13.8kV, 15kV, 20kV, 35kV
  • Low voltage side: 400V, 415V, 480V, 690V

The voltage ratio can be customized according to local grid standards and customer specifications.


Q5: Is the 50kVA Oil Immersed Transformer available with copper winding?

A: Yes. ZISHENG provides both copper winding and aluminum winding options.

Copper winding advantages:

  • Higher conductivity
  • Lower electrical losses
  • Better heat resistance
  • Stronger mechanical performance
  • Longer operating life

Customers can select the winding material according to project efficiency requirements and budget considerations.


Q6: Can the 50kVA Oil Immersed Transformer be customized?

A: Yes. ZISHENG provides customized transformer solutions based on different application requirements.

Customization options include:

  • Voltage ratio
  • Frequency (50Hz/60Hz)
  • Copper or aluminum winding
  • Vector group
  • Impedance level
  • Tap changer design
  • Tank structure
  • Protection accessories
  • Environmental adaptation

Customized designs ensure the transformer matches the customer's electrical system and installation conditions.


Q7: Where can a 50kVA Oil Immersed Transformer be installed?

A: The transformer is widely used in:

  • Utility distribution networks
  • Outdoor substations
  • Industrial factories
  • Mining projects
  • Solar power plants
  • Energy storage projects
  • Commercial buildings
  • Agricultural power supply
  • Infrastructure projects
  • Remote area electrification systems

Q8: Is the 50kVA Oil Immersed Transformer suitable for outdoor installation?

A: Yes. The transformer is designed for outdoor operation.

The sealed steel tank structure provides protection against:

  • Rain
  • Dust
  • Humidity
  • Temperature variations
  • Outdoor environmental conditions

It is suitable for installation in tropical, high-temperature, and high-humidity regions.


Q9: What type of transformer oil is used in a 50kVA Oil Immersed Transformer?

A: ZISHENG uses high-quality insulating oil designed for transformer applications.

The transformer oil provides:

  • Excellent insulation performance
  • Efficient heat transfer
  • Stable chemical properties
  • Reliable cooling capability

Special oil solutions can be considered according to project requirements and regional standards.


Q10: How does the oil cooling system improve transformer performance?

A: The oil cooling system helps remove heat generated by the transformer core and windings during operation.

Benefits include:

  • Lower operating temperature
  • Improved insulation life
  • Better overload capability
  • More stable continuous operation
  • Improved transformer reliability

This makes oil immersed transformers suitable for power distribution systems with continuous loads.


Q11: What maintenance is required for a 50kVA Oil Immersed Transformer?

A: Regular maintenance helps maintain safe and reliable operation.

Recommended inspections include:

  • Checking oil level
  • Inspecting oil leakage
  • Checking bushings and terminals
  • Testing insulation performance
  • Inspecting grounding connections
  • Cleaning external surfaces

Proper maintenance can significantly extend transformer service life.


Q12: How does ZISHENG guarantee the quality of 50kVA Oil Immersed Transformers?

A: ZISHENG applies strict quality control throughout the entire manufacturing process.

Quality procedures include:

  • Raw material inspection
  • Core quality inspection
  • Winding resistance testing
  • Insulation testing
  • Voltage ratio testing
  • No-load loss testing
  • Load loss testing
  • Oil leakage testing
  • Dielectric strength testing
  • Final performance inspection

Each transformer is tested before shipment to ensure reliable operation at the customer's project site.


Q13: What standards can the 50kVA Oil Immersed Transformer meet?

A: ZISHENG transformers can be manufactured according to:

  • IEC standards
  • ANSI standards
  • Customer technical specifications
  • Local power system requirements

The specific standard can be selected according to the destination country and project requirements.


Q14: What is the expected service life of a 50kVA Oil Immersed Transformer?

A: A properly installed and maintained 50kVA Oil Immersed Transformer can provide decades of reliable operation.

The service life depends on:

  • Operating load conditions
  • Installation environment
  • Maintenance frequency
  • Insulation quality
  • Operating temperature

ZISHENG uses durable materials and advanced manufacturing technology to ensure long-term stable performance.


Q15: Why choose ZISHENG 50kVA Oil Immersed Transformer?

A: ZISHENG provides:

  • Professional transformer manufacturing experience
  • Multiple production lines
  • Strict quality management system
  • Competitive factory-direct pricing
  • Flexible customization capability
  • Reliable production and delivery capacity
  • International export experience

ZISHENG 50kVA Oil Immersed Transformer provides a reliable, efficient, and economical power distribution solution for utility, industrial, renewable energy, and infrastructure projects worldwide.

50kVA Oil Immersed Transformer50kVA Oil Immersed Transformer

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